diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 95d415f85c..c9bb1e69e0 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -1256,7 +1256,7 @@ void destroyIntervalOperatorInfo(void* param) {
   taosMemoryFreeClear(param);
 }
 
-static bool timeWindowinterpNeeded(SqlFunctionCtx* pCtx, int32_t numOfCols, SIntervalAggOperatorInfo* pInfo,
+static int32_t timeWindowinterpNeeded(SqlFunctionCtx* pCtx, int32_t numOfCols, SIntervalAggOperatorInfo* pInfo,
                                    bool* pRes) {
   // the primary timestamp column
   bool    needed = false;